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Although quite popular for the protection for ad-hoc networks (MANETs, IoT, VANETs, etc.), detection & mitigation techniques only function after the attack has commenced. Prevention, however, attempts at thwarting an attack before it is executed. Both techniques can be realized either by the collective collaboration of network nodes (i.e., adding security messages to protocols) or by internal...
Many MANET routing protocols do not perform well in dense scenarios with high network load. In these situations, we can observe a high level of route instability, which is often called "route flapping". In this paper we present the PRIME routing protocol, which uses a probabilistic multipath forwarding process to increase route stability in dense scenarios with high network load. We describe...
MANET networks (Mobile Ad hoc Networks) are a sub class of mobile and wireless networks. In this type of network, all the nodes are mobile and no fixed infrastructures are considered existing. Among the challenges of the MANET, the stability and the durability of the selected paths in the network. In a previous work, we proposed a solution to this challenge by taking into account the mobility of nodes...
Generally, the routing protocols for mobile md hoc networks (MANETs) employ a proactive or reactive (on-demand) routing strategy to facilitate multi-hop routes between different nodes. But, MANETs are ideal for such a wide range of applications that a single routing protocol is not well suited for all network conditions. Hybrid routing protocols can address this problem by benefiting from both routing...
In this paper, we address an important problem in mobile ad hoc networks, namely, the intrinsic inefficiency of the standard transmission control protocol (TCP), which has not been designed to work in these types of networks. After an initial training phase, we predict the mobility status of the network through a probabilistic approach, and we propose a series of ad hoc strategies to counteract the...
In this paper, we'll try to discuss the cooperation of nodes representing one of the important factors in improving the quality of service (QoS) and security in mobile ad hoc networks (MANETs). The routing protocols for MANETs are designed based on the assumption that all participating nodes are fully cooperative. In such networks, the Selfish behaviour is among the big challenges and can lead to...
The Optimized Link State Routing (OLSR) protocol has received considerable attention as a viable routing solution for mobile ad hoc networks. However, OLSR suffers from high routing and computational overhead, resulting in significant energy consumption and is quite detrimental to the lifetime and service duration of mobile ad hoc networks. In this work, we provide a detailed analysis of the OLSR...
Multipoint relaying is a key concept adopted in the optimized link state routing protocol (OLSR). It realizes efficient flooding of topology control (TC) messages. It simultaneously supports generating small topology information which is enough to find the shortest path for any pair of nodes. In this paper, we propose a method to find more efficient multipoint relay (MPR) set, in terms of reducing...
Wireless internet has become popular in recent years due to the tremendous growth in the number of mobile computing devices and high demand for continuous network connectivity regardless of physical locations. In this paper, we investigate the effects of routing protocols on the performance of Transmission Control Protocol (TCP) variants in multi-hop wireless networks. Through simulations we study...
Most routing protocols designed for MANETs to date employ breadth-first search (BFS), usually in the form of flooding of route requests or updates, to establish and maintain routes between source-destination pairs. This usually incurs significant overhead, which degrades the performance of the network. In this paper we present a new paradigm for routing protocols operating in MANETs, such that flooding...
Service discovery is one of the most fundamental building blocks of self-organization. While mature approaches exist in the realm of fixed networks, they are not directly applicable in the context of MANETs. We investigate and compare two different protocols as basis for service discovery, namely OLSR and WCPD. OLSR is a proactive routing protocol while WCPD is a path discovery protocol integrating...
Nowadays mobile ad hoc networks (MANETs) are proposed in many collaborative and mobile scenarios. Despite the effort of the research community on algorithms and implementations mainly targeted to laptops, very few implementations exist for commercial PDAs (i.e., equipped with Windows Mobile). In this work, a practical study on one of the few available and running implementations has been conducted,...
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